Loom shuttle



s. KRAWCZYK AND A. KNIGJ LOOM SHUTTLE;

APPLICATION HLED MAY3| 19217 Ptented May 16,

,UN-HBD STATES STANLEY KRAWGZYK AND ADoLr KNIG, or PLtAiNrIELD, NEW innsny,

Loorvr sHUrTLE. n

Applcationled May 3,1921. Serial No. 466,544. i l

T all wi/wm t may conce/rn Be it known that-we, STANLEY KRAWCZYK and ADOLF KNIG, citizens of the United kStates,`and residents of Plainfield, in the county of Union andy Statefof New Jersey, have'invented certain'new and useful lmprovements in Loom Shuttles, of which the following is a specification. Y, f

The present invention relates yto improvements in loom-shuttles, and has for its main object to provide a shuttle with a simple and inexpensive means which prevents longitudinal motion of the cop on the shuttle spindle when the latter is in its Voperative position, but permits of such movement when the said spindle is in its open or raised position.

Another object of the invention is to so construct andarrange the means which premoved to raised position.

Y which will more fully appear as the naturer vents the` cop from longitudinal movement on the spindle that the same does not inter` fere with the proper operation ofI the shuttle.

A further object of the invention isA to make the shuttle spindle expansible and to mount thereon a mechanism which will increase its size when the said spindle is shifted from its raised positiony into the shuttle, its size beingautomatically A still further object of the invention is to so construct the means which prevents the co 3 from longitudinal movement on kthe spindle that it may be conveniently mounted on already existing structures, without necessitating material changes in the construction of the latter. Another object: of theinvention is to provide ashuttle of the type mentioned which` is capable of manufacture on a commercialy scale, or in other-.words one which is not so difficult to make as to be beyond'the reasonable cost of 'such a contrivance. `v

With these and other objects in f view,

` ofthe invention is better understood, ythe same consists in the combination, arrangement and construction of parts hereinafter described, pointed out in the appended vclaims and illustrated in :the y accompanying drawings, it bein understood that many changes may be ma e in the `size and proportion of the several parts and details of'construction withinthe scopeof the/appended` claims, without departing from the spirit or sacricing any of the advantages ofthe invention. f f y reduced when speciecation of Letters' Patent. 4 Pata-need May 16, 1922.

One of the many possible 'embodiments of the invention is lillustrated 'in theaccompanying drawings, yin Vwhich igure 1 isa-side elevation, partly in section, offa shuttle constructed in accordance withl the present invention; Fig. 2isa1sec tion taken on line 2-2 of Fig. 1; Fig. 3 is a yview similar to theone ,shown in Fig. 1

,-of the drawings with the elements in other with a longitudinal opening 11, receivingr the cop 12, shown-in dotted linesl in Figs.

3 and 4 of the drawings, saidv cop being wound upon a cop tubeV 13, the latter being vdrawn over the spindle 14. The spindle is pivoted at 15 tothe shuttle 'bodyA and with 'the same co-operates a spring 16, to hold it 1n both its normall and raised positions, shownin Figs. 1 and 3, respectively, of the drawings. n Thepivoted vend 17 of the spindle n enlarged, as clearly shownA in the draw#V ings, and provided in its underface with a notch 18, adapted to receive a transverse pin 19,0n the shuttle body, said pin extendingin parallel yrelation to the pivot pin 15. The notch and pin 19 determinethe 'depressed position of the spindle, theraised position thereof being determined by a stop 2() onl the shuttle body, against which the enlarged end 17 of the spindle is adapted to abut, as shown in Fig. 3 of the drawings.'

The construction of the' elements thus fardescribed is of the usual type and their func-r tions and operations are well known. f

is made in the form of a, preferably, metallic strip, held in position on the spindle by a" screw 23, which extends througha slot 24 in the spindle, the slot 24 eXtending'in a pla-ne at right angles to that yofthe slot 14. The slot 24 permits of an adjustment of the abutment on the spindle, for 1a gpurp'ose'f hereinafter' to be described. The head 25 of the said screwvisdisposed within a recess '426k in the spindle, so as not to interfere with the mounting'ofthe cop thereon." To hold the abutmentxed positionupon thespin-' die, the saine is provide-d with serrations 27,

co-opera-ting with serrations 28 on the spindle. With the said abutment co-operates a pin 29,*that is longitudinally movable within a bore 29 in the slot 111, it being pivotally connected to a lever 30, which extends partlyinto the slot 14 and bore 29. This lever is mounted on the pin 19 above re-y ferred to. The pin 29 and abutment 21 are wholly disposed within the spindle, the ree end of the pin 29 rbeing wedge-shaped, as

lshown at 32, said wedge-shaped end' being adapted to ride over the wedge-shaped end 22 of the abutment.` As appears from the drawings the pin 19 is disposed below the pivot pin 15 between the latter and the abut- 4side of theV opening 11, the pin 29 is disengaged rom the abutment 21, the result being that the spindle assumes its normal sizefl rlhe operator draws then the cop over* the spindle, bringing the cop tube against kthe enlarged portion 17 of the said spindle.

vVhen now the spindle, with the cop therefon,'is. depressed, that is to say is swung around its pivot pin 15 into the openingll in the shuttle body, the lever 30 swings in the saine direction on the pin 19,l with the result that the pin '29 is caused to move toy ward the abutment 21, riding over the wedgeshaped end 22 of the latter and thus eX- panding the spindle. The result .of this expansion is'. that the cop is rfirmly held in posit-ion upon the spindle both against turn- -ing vand longitudinal movements. The amount of expansion of the spindle is determned by the position of the Aabutment in relation to the pin 29. When the spindle is raised, the pin 29 automatically recedes from the abutment, whereby the size of the Y ,spindle is reduced, thus permitting of a convenient removing of the empty cop tube v therefrom. The size of the cop tube is, ob-

" `viously, such that it may be easily drawn voverthe spindle, when the latter is in its f .raised position. f 55.

, Attention is called to ,l Y,yarn cannot,-in the operationy of the shuttle,

the fact that, inas-l jginuch as the abutment maybe adjusted in' l relation to the pin 29, the shuttle is a-dapted` `for usel in connection withy different sizes oi'- vCops. Itis lto be noted that the cop tube abuts. against ther enlarged .lportion 17 `of` Forthis reason the thread or.

as in the constructions heretofore in use, in which the spindle usually has to be made larger than the bore ofthe cop tube in order to hold the 'cop "in"position,"and "consequently the cop tube cannot be brought into abutment with the enlarged portion of the spindle.

vrrhe device herein described has a num ber ot advantages over the old constructions. n the rdevices heretofore used considerable time is wasted in placing the cops into the shuttles and besides that the operation requires quite some strength on the part ci: the operator. No matter howtight the cops are put on and no matter how careful the operator is in doing this work, the cops shift on the spindles, the result beingthat the filling or yarn is apt` to break. This not onlyy means loss of tiine, stopping of the loom, etc., but also a waste-of tlieilling or yarn.` lnasmuch as .in the constructions heretofore used, the cop must be forced onto the spindle, the latter is often bent and the shuttle body split. W ith the device herein described these troubles i areall overcome. Moreover, such cops,-in which the thread `or yarn is too loosely wound upon the cop tubes,

are ladapted for use, because the cop is eX- panded .when the spindle size is enlarged. 1n the constructions heretofore infuse this is not the case. As amatter of fact, through the squeezing and twisting,`to which` the cop is subjected in putting the sainek on the spindle, the thread or `yarn is yeven more loosened up, so that, when the shuttle is put inmotion, the entire cop comes oii' at once,

resulting in waste of materialand time.

lt is to be observed that they lever BOand 'pin 29, in l(5o-,operation with the abutment 21,

act as a brake'for the springl.y Vhen, therefore,the spindle is shifted `from its raised `position into the shuttle body, the spindle has no tendency to'` bend the pin 19 and possibly'split theshuttle body.

1. The combination with a shuttle body having an'opening, ofran expansible spindle pivoted thereto adapted to receive a'cop, an abutment*fixed` within said spindle having a wedge-shaped 'end :facing the pivotfoi:` said spindle, a longitudinally shiftable pin wholly disposed'in said spindle and adapted toV cooperate with said abutment, and a ,lever pivcted to said bodyand? connected with said pin, said lever swinging with said spindle 'and causing vsaid pinto ride' over the wedge- 4,shaped lend of' said abutment when rsaid spindle is swung into said opening and with-y 1 drawing saidpin from said'abut'ment when saidspindle is raised out of said opening.

2.1Thelcombination with ashvuttle vbody '-havingan opening, of a split spindle pivoted .conie between thecop tube and the said en y glarged spindleiportion; there is no possi ci ajlgility; thus: 0f; hei kthread or. .yarnibeing torn,

posed within said spindle and connectedf'to said lever for causing an expansion of said split spindle when the latter is swung into said opening and causing a contraction thereof when said spindle is raised out of said opening.

3. In a shuttle according to claim l,r said abutment being adjustably fixed to said spindle to predetermine the extent of eX- pansion thereof.

4. In a shuttle according` to claim l, the free end of said pin being also wedge-shaped.

5. The combination with a shuttle body having an opening, of an expansible spindle pivoted thereto adapted to receive a cop7 the pivoted end of said spindle being enlarged and having a notch inits under-face, a stoppin on said bodyv adapted to receive said notch7 an abutment fixed within said spindle having a wedge-shaped end facing the pivot of said spindle, a longitudinally shiftable pinwholb7 disposed within said spindle and adapted to (zo-operate with said abutment, and a lever ifulcrumed to said stop-pin and connected with said shiittable pin, said lever swung` into said opening and withdrawing said shiftable pinv from said abutment when said spindle yis raised out of said opening.k

6. In a shuttle according to claim 5, said abutment being adjustably iiXed to said spindle to predetermine the extent of eX- pansion thereof. n v

7.1n a shuttle -according to claiin, the free end of said shiftable pin being also wedge-shaped.

Signed at Plainlield, in the county of Union and State of New Jersey, this 18th 'day of April, A. D. 1921.

. ,STANLEY KiniwczYK ADOLF nome. 

